Tube manufacturing support device and tube manufacturing method

A tube manufacturing support device used for manufacturing a tube by arranging a plurality of metal plates extending in a tube axis direction along which a tube axis extends and spreading in a circumferential direction with respect to the tube axis, in the circumferential direction around the tube axis, and joining metal plates adjacent to each other in the circumferential direction among the plurality of metal plates, the tube manufacturing support device comprising:

• a gate-shaped frame including a first column and a second column that extend in a vertical direction and are disposed at intervals in a lateral direction, and an upper beam that extends in the lateral direction and connects an upper end of the first column and an upper end of the second column;
• a slider configured to support the plurality of metal plates to be movable in a depth direction perpendicular to the lateral direction and the vertical direction between the first column and the second column;
• an upper pressing mechanism that is attached to the upper beam to be movable in the lateral direction along the upper beam and is configured to press any one of the plurality of metal plates supported by the slider;
• a first lateral pressing mechanism that is attached to the first column and is configured to press any one of the plurality of metal plates supported by the slider;
• and
• a second lateral pressing mechanism that is attached to the second column and is configured to press any one of the plurality of metal plates supported by the slider.